App accessed some Facebook users' messages

Facebook has confirmed that private messages were included in data involved in the Cambridge Analytica scandal. On Monday, Cambridge Analytica issued a fresh statement, restating that it had licensed "Legally obtained" data from Global Science Research director Aleksandr Kogan, adding that "Hundreds of data firms have utilised Facebook data in a similar fashion". The latest revelation emerged after Facebook began sending notices to users it had indentified as being among the 87 million people whose data had been potentially shared with Cambridge Analytica. Cambridge Analytica has said it only obtained data on about 30 million US citizens. Ahead of his appearance, Facebook announced it would begin paying bounties to those who reported misuses of members' data by app developers.